There was no drawing of a hand there! There was nothing that looked like a hand there. I think it's real! This picture was taken at school. I remember reading a book about the school building in the school library. They used to torture and kill people in that building before it was a school!

Halloween wraps fear in innocence,As though it were a slightly sour sweet.Let terror, then, be turned into a treat...~Nicholas Gordon

I don't know if it is real, it just doesn't look like it to me. I could be wrong, hopefully I am, because otherwise that is just way too scary! Perhaps take some more pictures in the building and see what comes out. You never know.